Downua Ruawaiking

Boxing career

He made his professional boxing debut in mid-2016 under Ekarat "Jimmy" Chaichotchuang of Kiat Kreerin Promotion, with British trainer Rian Munton. On 22 February 2017, in just his seventh fight, he captured the vacant IBF Pan Pacific title by knocking out Japanese boxer Yuta Maruoka in the first round.

On 23 August 2017, he won the vacant IBF Asia light-welterweight title by unanimous decision over Filipino challenger Adam Diu "Big Daddy" Abdulhamid at Suan Lum Night Bazaar, Ratchadaphisek.

On 18 February 2019, he faced Japanese fighter Akihiro Kondo in an IBF junior welterweight world title eliminator. Khongsong delivered a right uppercut that knocked Kondo out in the fifth round at Korakuen Hall, Tokyo.

He suffered his first career loss on 26 September 2020, when he was defeated by Josh Taylor via a first-round knockout in a unification bout for the WBA (Super), IBF, and The Ring light-welterweight titles at York Hall, London. For this fight, he was trained by Amnat Ruenroeng, a former IBF flyweight champion and two-time Olympic competitor, who guided him through the preparations for the high-stakes bout.

Some time after the fight, Khongsong publicly questioned the terms of his purse, which was reportedly set at £500,000 (around 20 million baht) according to the contract. He claimed, however, that he had never seen the contract himself and called on the promotion team to clarify the matter.

Professional boxing record